2020331021 has 4 divisors (see below), whose sum is σ = 2028013152. Its totient is φ = 2012648892.

The previous prime is 2020330999. The next prime is 2020331029. The reversal of 2020331021 is 1201330202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2020331021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020330987 and 2020331005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020331029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3840671 + ... + 3841196.

It is an arithmetic number, because the mean of its divisors is an integer number (507003288).

Almost surely, 2^2020331021 is an apocalyptic number.

It is an amenable number.

2020331021 is a deficient number, since it is larger than the sum of its proper divisors (7682131).

2020331021 is an equidigital number, since it uses as much as digits as its factorization.

2020331021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7682130.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 2020331021 is about 44948.0925179256. The cubic root of 2020331021 is about 1264.1759115734.

Adding to 2020331021 its reverse (1201330202), we get a palindrome (3221661223).

The spelling of 2020331021 in words is "two billion, twenty million, three hundred thirty-one thousand, twenty-one".